FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progre... more FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progresso, Rio Curuá, tributary of Rio Iriri, above two waterfalls, near the restaurant at highway Cuiabá-Santarém (BR-163), Rio Xingu basin. From top to bottom: lateral, dorsal and ventral views.
The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some a... more The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some authors. The taxonomic history of Rineloricaria is quite complex, especially concerning its wide distribution and morphological plasticity that make it difficult to diagnose and describe new species. Even with the great species-richness of the genus and the huge diversity of the system, the Tocantins-Araguaia River basin hosts only three formally described species of Rineloricaria: R. hasemani, R. lanceolata, and R. osvaldoi, the former is known from lower Tocantins River, R. lanceolata widespread along Amazon basin and the last one restricts to the Araguaia River basin. Recent field expeditions and collection examination revealed an undescribed species of the genus from the upper and middle Tocantins River drainage. The new species is diagnosed among its congeners by having a greater number of premaxillary and dentary teeth (both with up to 15 vs. up to 10 in most congeners). From R. hasemani it is also distinguished by having the edge of snout straight in lateral view and absence of filaments on lower lip. It is also diagnosed from R. lanceolata by having wider cleithral width and a quite different color pattern, lacking a hyalin spot on the base of pectoral and pelvic fins; and from R. osvaldoi by having a lower head depth, triangular head in dorsal view, shorter snout length and other features.
FIGURE 6. Rio Curuá, type locality of Harttia panara and H. villasboas. Close view of waterfalls.... more FIGURE 6. Rio Curuá, type locality of Harttia panara and H. villasboas. Close view of waterfalls.a) 60m waterfalls; b) 40m waterfall; c) three smaller waterfalls of approximately 1 to 5m.
FIGURE 5. Sequence of waterfalls of Rio Curuá at Serra do Cachimbo, from lower to upper stream: a... more FIGURE 5. Sequence of waterfalls of Rio Curuá at Serra do Cachimbo, from lower to upper stream: a) 60 m fall, at 8˚43'49.7"S 54˚57'49.1"W; b) 40 m fall, at 8˚44'1.7"S 54˚57'43.1"W; c) three smaller falls of approximately 1 to 5 m, at 8˚44'9.5"S 54˚57'46.5"W.At right side PCH Salto do Curuá under construction.
FIGURE4. Map of Rio Xingu basin showing thedistribution of Harttiarondoni n. sp. (black circle—ho... more FIGURE4. Map of Rio Xingu basin showing thedistribution of Harttiarondoni n. sp. (black circle—holotype; white circleparatypes); Harttia panara n. sp. (black triangle—holotype, white triangles,—paratypes); Harttia villasboas n. sp. (black star represent the holotype and paratypes).
FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progre... more FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progresso, Rio Curuá, tributary of Rio Iriri, above two waterfalls, near the restaurant at highway Cuiabá-Santarém (BR-163), Rio Xingu basin. From top to bottom: lateral, dorsal and ventral views.
FIGURE 2. Harttia panara, MZUSP 101392, 105.7 mm SL, holotype. Brazil, Pará State, Novo Progresso... more FIGURE 2. Harttia panara, MZUSP 101392, 105.7 mm SL, holotype. Brazil, Pará State, Novo Progresso, Rio Curuá, tributary of RioIriri, on the bridge at highway Cuiabá-Santarém(BR-163),Rio Xingu basin.From top to bottom:lateral, dorsal and ventral views.
FIGURE1. Harttia rondoni, MZUSP 97237, 162.8mm SL, holotype.Brazil, Pará State,Novo Progresso, Ri... more FIGURE1. Harttia rondoni, MZUSP 97237, 162.8mm SL, holotype.Brazil, Pará State,Novo Progresso, Rio Curuá, tributary of Rio Iriri, near Castelo dos Sonhos, Rio Xingu basin. From top to bottom:lateral, dorsal and ventral views.
Rineloricaria daraha, new species, is described from the rio Daraá, tributary of rio Negro, north... more Rineloricaria daraha, new species, is described from the rio Daraá, tributary of rio Negro, northwestern Amazonas State, Brazil. The new species is diagnosed by having seven branched pectoral-fin rays, finger-like papillae on the lower lip, a large multi-angular preanal plate, and at least four quadrangular plates of variable size surrounding the preanal plate. The new species is known only from rio Daraá and its waterfalls.
A new species of Harttia, tribe Harttiini, is described from tributaries of upper portions of rio... more A new species of Harttia, tribe Harttiini, is described from tributaries of upper portions of rio Paraná drainage. The new species, the smallest known species of the genus, attaining up to 74.0 mm of standard length, can be distinguished from its congeners by the combination of the following characters: abdomen completely covered by plates, a single preanal plate, plates of the gular area in broad contact with the canal plate. Harttia absaberi is the second species of the genus known from the upper portion of rio Paraná drainage.
The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some a... more The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some authors. The taxonomic history of Rineloricaria is quite complex, especially concerning its wide distribution and morphological plasticity that make it difficult to diagnose and describe new species. Even with the great species-richness of the genus and the huge diversity of the system, the Tocantins-Araguaia River basin hosts only three formally described species of Rineloricaria: R. hasemani, R. lanceolata, and R. osvaldoi, the former is known from lower Tocantins River, R. lanceolata widespread along Amazon basin and the last one restricts to the Araguaia River basin. Recent field expeditions and collection examination revealed an undescribed species of the genus from the upper and middle Tocantins River drainage. The new species is diagnosed among its congeners by having a greater number of premaxillary and dentary teeth (both with up to 15 vs. up to 10 in most congeners). From R. has...
Fig. 3. Rineloricaria osvaldoi, dorsal and ventral views of the anterior region of the body (a an... more Fig. 3. Rineloricaria osvaldoi, dorsal and ventral views of the anterior region of the body (a and b, male, MZUSP 89022 126.3 mm SL, c and d, female, MZUSP 89075, 125.7 mm SL).
FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progre... more FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progresso, Rio Curuá, tributary of Rio Iriri, above two waterfalls, near the restaurant at highway Cuiabá-Santarém (BR-163), Rio Xingu basin. From top to bottom: lateral, dorsal and ventral views.
The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some a... more The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some authors. The taxonomic history of Rineloricaria is quite complex, especially concerning its wide distribution and morphological plasticity that make it difficult to diagnose and describe new species. Even with the great species-richness of the genus and the huge diversity of the system, the Tocantins-Araguaia River basin hosts only three formally described species of Rineloricaria: R. hasemani, R. lanceolata, and R. osvaldoi, the former is known from lower Tocantins River, R. lanceolata widespread along Amazon basin and the last one restricts to the Araguaia River basin. Recent field expeditions and collection examination revealed an undescribed species of the genus from the upper and middle Tocantins River drainage. The new species is diagnosed among its congeners by having a greater number of premaxillary and dentary teeth (both with up to 15 vs. up to 10 in most congeners). From R. hasemani it is also distinguished by having the edge of snout straight in lateral view and absence of filaments on lower lip. It is also diagnosed from R. lanceolata by having wider cleithral width and a quite different color pattern, lacking a hyalin spot on the base of pectoral and pelvic fins; and from R. osvaldoi by having a lower head depth, triangular head in dorsal view, shorter snout length and other features.
FIGURE 6. Rio Curuá, type locality of Harttia panara and H. villasboas. Close view of waterfalls.... more FIGURE 6. Rio Curuá, type locality of Harttia panara and H. villasboas. Close view of waterfalls.a) 60m waterfalls; b) 40m waterfall; c) three smaller waterfalls of approximately 1 to 5m.
FIGURE 5. Sequence of waterfalls of Rio Curuá at Serra do Cachimbo, from lower to upper stream: a... more FIGURE 5. Sequence of waterfalls of Rio Curuá at Serra do Cachimbo, from lower to upper stream: a) 60 m fall, at 8˚43'49.7"S 54˚57'49.1"W; b) 40 m fall, at 8˚44'1.7"S 54˚57'43.1"W; c) three smaller falls of approximately 1 to 5 m, at 8˚44'9.5"S 54˚57'46.5"W.At right side PCH Salto do Curuá under construction.
FIGURE4. Map of Rio Xingu basin showing thedistribution of Harttiarondoni n. sp. (black circle—ho... more FIGURE4. Map of Rio Xingu basin showing thedistribution of Harttiarondoni n. sp. (black circle—holotype; white circleparatypes); Harttia panara n. sp. (black triangle—holotype, white triangles,—paratypes); Harttia villasboas n. sp. (black star represent the holotype and paratypes).
FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progre... more FIGURE 3. Harttia villasboas, MZUSP 97078, 126.0 mm SL, holotype. Brazil, Pará State, Novo Progresso, Rio Curuá, tributary of Rio Iriri, above two waterfalls, near the restaurant at highway Cuiabá-Santarém (BR-163), Rio Xingu basin. From top to bottom: lateral, dorsal and ventral views.
FIGURE 2. Harttia panara, MZUSP 101392, 105.7 mm SL, holotype. Brazil, Pará State, Novo Progresso... more FIGURE 2. Harttia panara, MZUSP 101392, 105.7 mm SL, holotype. Brazil, Pará State, Novo Progresso, Rio Curuá, tributary of RioIriri, on the bridge at highway Cuiabá-Santarém(BR-163),Rio Xingu basin.From top to bottom:lateral, dorsal and ventral views.
FIGURE1. Harttia rondoni, MZUSP 97237, 162.8mm SL, holotype.Brazil, Pará State,Novo Progresso, Ri... more FIGURE1. Harttia rondoni, MZUSP 97237, 162.8mm SL, holotype.Brazil, Pará State,Novo Progresso, Rio Curuá, tributary of Rio Iriri, near Castelo dos Sonhos, Rio Xingu basin. From top to bottom:lateral, dorsal and ventral views.
Rineloricaria daraha, new species, is described from the rio Daraá, tributary of rio Negro, north... more Rineloricaria daraha, new species, is described from the rio Daraá, tributary of rio Negro, northwestern Amazonas State, Brazil. The new species is diagnosed by having seven branched pectoral-fin rays, finger-like papillae on the lower lip, a large multi-angular preanal plate, and at least four quadrangular plates of variable size surrounding the preanal plate. The new species is known only from rio Daraá and its waterfalls.
A new species of Harttia, tribe Harttiini, is described from tributaries of upper portions of rio... more A new species of Harttia, tribe Harttiini, is described from tributaries of upper portions of rio Paraná drainage. The new species, the smallest known species of the genus, attaining up to 74.0 mm of standard length, can be distinguished from its congeners by the combination of the following characters: abdomen completely covered by plates, a single preanal plate, plates of the gular area in broad contact with the canal plate. Harttia absaberi is the second species of the genus known from the upper portion of rio Paraná drainage.
The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some a... more The genus Rineloricaria comprises 69 valid species and has been considered monophyletic by some authors. The taxonomic history of Rineloricaria is quite complex, especially concerning its wide distribution and morphological plasticity that make it difficult to diagnose and describe new species. Even with the great species-richness of the genus and the huge diversity of the system, the Tocantins-Araguaia River basin hosts only three formally described species of Rineloricaria: R. hasemani, R. lanceolata, and R. osvaldoi, the former is known from lower Tocantins River, R. lanceolata widespread along Amazon basin and the last one restricts to the Araguaia River basin. Recent field expeditions and collection examination revealed an undescribed species of the genus from the upper and middle Tocantins River drainage. The new species is diagnosed among its congeners by having a greater number of premaxillary and dentary teeth (both with up to 15 vs. up to 10 in most congeners). From R. has...
Fig. 3. Rineloricaria osvaldoi, dorsal and ventral views of the anterior region of the body (a an... more Fig. 3. Rineloricaria osvaldoi, dorsal and ventral views of the anterior region of the body (a and b, male, MZUSP 89022 126.3 mm SL, c and d, female, MZUSP 89075, 125.7 mm SL).
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